Also known as the 2nd Model Lipfire, this revolver was manufactured in the early 1860s with a total production of only about 250. The left side barrel flat is marked "ALLEN & WHEELOCK, WORCESTER, MASS. U.S./ALLEN' S PAT'S SEP. 7, NOV. 9, 1858," and the serial (batch) "207" is marked on the left side of the frame under the grip, on the loading gate and on the rear face of the cylinder. The rear cylinder wall has notches for cartridge lips. The lipfire is sometimes confused as a conversion from percussion but was actually manufactured before the percussion model. It has pinched brass blade front and frame notch rear sights, loading gate hinged at the bottom, narrow grip frame and two piece varnished walnut grips. Although no government contracts were given for this model, it is considered a martial piece by collectors. This model was discontinued due to a successful patent infringement suit by Smith & Wesson.